It's only (human/human's) nature to want a comfortable life.

题型：填空题题类：常考题难易度：普通

仁爱科普版九年级上Unit 1 The Changing World Topic 3 The world haschanged for the better.同步练习

举一反三

点拨：{#blank#}1{#/blank#}意为"当……时候"，后面通常接时间点，从句中谓语动词用短暂性动词。另外，while，意为"当……时候"，后面只能接一段时间，不能接时间点，其引导的从句的动作或状态往往与主句的动作同时发生。

While we were walking home, it began to rain.＝ {#blank#}2{#/blank#}

{#blank#}1{#/blank#} {#blank#}2{#/blank#}I{#blank#}3{#/blank#} {#blank#}4{#/blank#}you?

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